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[bgp-stats] Routing Table Report - Japan view
* BGP Statistics focusing on the Asia Pacific Region *
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Routing Table Report 04:00 +10GMT Wed 13 Mar, 2002
Analysis Summary
----------------
BGP routing table entries examined: 109846
Prefixes after maximum aggregation: 72202
Unique aggregates announced to Internet: 51943
Total ASes present in the Internet Routing Table: 12724
Origin-only ASes present in the Internet Routing Table: 11013
Origin ASes announcing only one prefix: 4819
Transit ASes present in the Internet Routing Table: 1711
Transit-only ASes present in the Internet Routing Table: 58
Average AS path length visible in the Internet Routing Table: 5.4
Max AS path length visible: 16
Illegal AS announcements present in the Routing Table: 1
Non-routable prefixes present in the Routing Table: 0
Prefixes being announced from the IANA Reserved Address blocks: 20
Number of addresses announced to Internet: 1167917480
Equivalent to 69 /8s, 157 /16s and 1 /24s
Percentage of available address space announced: 31.5
Percentage of allocated address space announced: 59.6
Percentage of available address space allocated: 52.8
Total number of prefixes smaller than registry allocations: 73617
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 17934
Total APNIC prefixes after maximum aggregation: 10655
Prefixes being announced from the APNIC address blocks: 16446
Unique aggregates announced from the APNIC address blocks: 9982
APNIC Region origin ASes present in the Internet Routing Table: 1458
APNIC Region origin ASes announcing only one prefix: 478
APNIC Region transit ASes present in the Internet Routing Table: 251
Average APNIC Region AS path length visible: 5.3
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 81611584
Equivalent to 4 /8s, 221 /16s and 75 /24s
Percentage of available APNIC address space announced: 60.3
APNIC AS Blocks 4608 - 4864, 7467 - 7722, 9216 - 10239
17408 - 18431, 23552 - 24575
APNIC Address Blocks 61/8, 202/7, 210/7, 218/7 and 220/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 73595
Total ARIN prefixes after maximum aggregation: 47419
Prefixes being announced from the ARIN address blocks: 52013
Unique aggregates announced from the ARIN address blocks: 16239
ARIN Region origin ASes present in the Internet Routing Table: 7536
ARIN Region origin ASes announcing only one prefix: 2358
ARIN Region transit ASes present in the Internet Routing Table: 777
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 16
Number of ARIN addresses announced to Internet: 190116804
Equivalent to 11 /8s, 84 /16s and 243 /24s
Percentage of available ARIN address space announced: 70.8
ARIN AS Blocks 1 - 1876, 1902 - 2042, 2044 - 2046, 2048 - 2106
2138 - 2584, 2615 - 2772, 2823 - 2829, 2880 - 3153
3354 - 4607, 4865 - 5119, 5632 - 6655, 6912 - 7466
7723 - 8191, 10240 - 12287, 13312 - 15359
16384 - 17407, 18432 - 20479, 21504 - 23551
ARIN Address Blocks 24/8, 63/8, 64/6, 68/8, 199/8, 200/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 18317
Total RIPE prefixes after maximum aggregation: 14128
Prefixes being announced from the RIPE address blocks: 15067
Unique aggregates announced from the RIPE address blocks: 10033
RIPE Region origin ASes present in the Internet Routing Table: 3671
RIPE Region origin ASes announcing only one prefix: 1983
RIPE Region transit ASes present in the Internet Routing Table: 670
Average RIPE Region AS path length visible: 5.9
Max RIPE Region AS path length visible: 15
Number of RIPE addresses announced to Internet: 107430944
Equivalent to 6 /8s, 103 /16s and 68 /24s
Percentage of available RIPE address space announced: 71.1
RIPE AS Blocks 1877 - 1901, 2043, 2047, 2107 - 2136, 2585 - 2614
2773 - 2822, 2830 - 2879, 3154 - 3353, 5377 - 5631
6656 - 6911, 8192 - 9215, 12288 - 13311, 15360 - 16383
20480 - 21503, 24576 - 25599
RIPE Address Blocks 62/8, 80/7, 193/8, 194/7, 212/7 and 217/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1221 1289 1229 951 Telstra Pty Ltd
4538 459 1162 16 China Education and Research
2907 406 1926 372 SINET Japan
703 404 333 314 UUNET Technologies, Inc.
2764 386 361 362 connect.com.au pty ltd
9394 301 113 4 CHINA RAILWAY Internet(CRNET)
7474 295 289 200 Optus Communications Pty Ltd
4755 289 111 87 Videsh Sanchar Nigam Ltd. Aut
4134 274 1962 97 Data Communications Bureau
9443 273 44 63 Primus Telecommunications
17557 227 15 97 Pakistan Telecom
4766 212 1520 148 Korea Internet Exchange for "
4804 165 84 68 Microplex PTY LTD
7539 165 237 158 TANet2, sponsored by NSC, TAI
9583 144 32 5 Satyam Infoway Ltd.,
9768 137 385 82 Korea Telecom
4713 127 906 104 NTT Communications Corporatio
7657 123 22 86 The Internet Group Limited
4780 118 186 40 Digital United Inc.
17676 117 1872 17 XTAGE CORPORATION
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 1035 2631 851 UUNET Technologies, Inc.
3301 395 924 349 TeliaNet Sweden
3215 262 570 157 France Telecom / &Equant
1257 236 487 232 SWIPnet Swedish IP Network
680 231 2147 230 DFN-IP service G-WiN
5515 216 697 173 Sonera Finland Autonomous Sys
5400 198 83 93 Concert European Core Network
3320 196 1964 171 Deutsche Telekom AG
786 182 1874 182 The JANET IP Service
719 163 289 118 LANLINK autonomous system
8708 157 23 146 Romania Data Systems S.A.
2856 131 790 120 BTnet UK Regional network
3303 124 579 124 Swisscom Ltd
12302 123 8 44 MobiFon S.A.
8297 117 37 65 Teleglobe Autonomous System i
3269 116 693 70 TELECOM ITALIA
9051 101 6 25 INCONET Autonomous System
517 100 226 98 KPNQwest Germany GmbH
2874 97 100 37 Global One Services AB
5511 91 192 79 France Telecom
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
701 2150 8422 1519 UUNET Technologies, Inc.
7018 1215 7494 911 AT&T
3908 845 1659 479 Supernet, Inc.
1 835 8123 609 BBN Planet
1239 795 3382 623 Sprint
4323 639 435 252 Time Warner Communications, I
852 633 1128 413 Telus Advanced Communications
7046 619 835 406 UUNET Technologies, Inc.
209 545 1993 315 Qwest
7132 517 544 159 Southwestern Bell Internet Se
3549 477 843 243 Global Crossing
690 436 66 282 Merit Network
2914 419 2176 416 Verio, Inc.
7843 381 311 52 Adelphia Corp.
2149 376 209 312 Performance Systems, Inc.
705 372 115 263 UUNET Technologies, Inc.
3741 345 731 235 The Internet Solution
2386 338 372 193 AT&T Data Communications Serv
6197 326 215 168 BellSouth Network Solutions,
3561 323 2168 290 Cable & Wireless USA
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4538 459 443 China Education and Research
4323 639 387 Time Warner Communications, I
3908 845 366 Supernet, Inc.
7132 517 358 Southwestern Bell Internet Se
1221 1289 338 Telstra Pty Ltd
7843 381 329 Adelphia Corp.
7018 1215 304 AT&T
9394 301 297 CHINA RAILWAY Internet(CRNET)
4151 305 289 USDA
11371 287 281 Rhythms NetConnections
6198 309 276 BellSouth Network Solutions,
6347 319 237 SAVVIS Communications Corpora
3549 477 234 Global Crossing
209 545 230 Qwest
7029 244 229 Alltel Information Services,
1 835 226 BBN Planet
852 633 220 Telus Advanced Communications
7046 619 213 UUNET Technologies, Inc.
9443 273 210 Primus Telecommunications
4355 242 205 EarthLink, Inc.
List of Unregistered ASNs (Global)
----------------------------------
Bad AS Designation Network Transit AS Description
5757 UNALLOCATED 207.19.224.0/24 701 UUNET Technologies,
Advertised Unregistered Addresses
---------------------------------
Network Origin AS Description
39.0.0.0/8 4554 Exchange Point Blocks
96.0.0.0/20 3549 Global Crossing
101.101.5.0/24 684 Manitoba Regional Network
101.101.101.0/24 684 Manitoba Regional Network
102.102.102.0/24 684 Manitoba Regional Network
121.121.121.0/24 684 Manitoba Regional Network
122.122.122.0/24 684 Manitoba Regional Network
132.0.0.0/10 568 DISO-UNRRA
134.137.0.0/16 7170 AT&T Government Markets
135.0.0.0/13 10455 Lucent Technologies
137.0.0.0/13 568 DISO-UNRRA
138.94.0.0/16 1 BBN Planet
144.7.0.0/16 701 UUNET Technologies, Inc.
153.36.0.0/14 701 UUNET Technologies, Inc.
154.150.0.0/16 6494 IDCI
158.0.0.0/13 568 DISO-UNRRA
164.233.0.0/16 6020 DISA NETWORK SERVICES
164.235.0.0/16 6025 US DOD NIC Unregistered
189.186.184.0/24 4471 Michigan Internet Cooperative
201.115.100.0/24 7018 AT&T
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:19 /9:5 /10:8 /11:14 /12:35
/13:88 /14:231 /15:404 /16:7177 /17:1384 /18:2546
/19:7405 /20:6905 /21:4932 /22:7505 /23:9176 /24:61044
/25:220 /26:261 /27:117 /28:90 /29:109 /30:131
/31:0 /32:40
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
701 1391 2150 UUNET Technologies, Inc.
1221 1146 1289 Telstra Pty Ltd
702 656 1035 UUNET Technologies, Inc.
7018 637 1215 AT&T
3908 582 845 Supernet, Inc.
4323 510 639 Time Warner Communications, I
1239 454 795 Sprint
7046 436 619 UUNET Technologies, Inc.
1 433 835 BBN Planet
690 432 436 Merit Network
852 388 633 Telus Advanced Communications
209 358 545 Qwest
2764 342 386 connect.com.au pty ltd
3549 340 477 Global Crossing
703 326 404 UUNET Technologies, Inc.
705 320 372 UUNET Technologies, Inc.
9394 288 301 CHINA RAILWAY Internet(CRNET)
2149 285 376 Performance Systems, Inc.
11371 281 287 Rhythms NetConnections
6197 275 326 BellSouth Network Solutions,
Number of /24s announced per /8 block (Global)
----------------------------------------------
3:1 9:1 12:490 13:10 15:1 17:5
20:2 24:758 25:1 32:69 38:9 40:6
44:1 57:15 61:287 62:173 63:1883 64:1151
65:1074 66:812 67:52 68:5 80:208 81:5
101:2 102:1 121:1 122:1 128:63 129:123
130:23 131:73 132:11 133:3 134:126 135:10
136:266 137:102 138:194 139:48 140:185 141:62
142:88 143:37 144:142 145:13 146:218 147:157
148:131 149:91 150:41 151:50 152:344 153:33
154:8 155:90 156:76 157:117 158:72 159:118
160:24 161:55 162:141 163:106 164:97 165:123
166:224 167:188 168:95 169:49 170:289 171:2
189:1 192:5418 193:2215 194:2083 195:797 196:427
198:3691 199:3226 200:2374 201:1 202:3001 203:4541
204:3324 205:2163 206:2569 207:2620 208:2565 209:2808
210:549 211:201 212:866 213:587 214:9 215:18
216:2981 217:456 218:21
End of report
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